SOLUTION: Use the identities {{{ tan (x) = sin (x) / cos (x) }}} and/or {{{ sin^2 (x) + cos^2 (x) = 1 }}} to simplify {{{ 1 - cos^2 (x) }}}

Algebra ->  Trigonometry-basics -> SOLUTION: Use the identities {{{ tan (x) = sin (x) / cos (x) }}} and/or {{{ sin^2 (x) + cos^2 (x) = 1 }}} to simplify {{{ 1 - cos^2 (x) }}}      Log On


   



Question 228234: Use the identities +tan+%28x%29+=+sin+%28x%29+%2F+cos+%28x%29+ and/or +sin%5E2+%28x%29+%2B+cos%5E2+%28x%29+=+1+ to simplify +1+-+cos%5E2+%28x%29+
Answer by chibisan(131) About Me  (Show Source):
You can put this solution on YOUR website!
using +sin%5E2+%28x%29+%2B+cos%5E2+%28x%29+=+1+ to simplify +1+-+cos%5E2+%28x%29+
+sin%5E2%28x%29=+1+-+cos%5E2%28x%29+
1-cos^2(x)
=sin^2(x)